function charIdx2LineCharIdx(str:String, charIdx:int, lineDelim:String):Point
{
    var line:int = str.substr(0,charIdx).split(lineDelim).length - 1;
    var chr:int = line > 0 ? charIdx - str.lastIndexOf(lineDelim,charIdx) - lineDelim.length : charIdx;

    return new Point(line, chr);
}